IP Library › Granted Patent US 4,388,983
Granted Patent Utility
US 4,388,983 · App. 06/342,149

Lightweight ladder

Inventors: Leroy R. Bartels, Arnold M. Milbright
Patented Case View Patent ↗
Granted: Jun 21, 1983 Filed: Jan 25, 1982
Inventors
Leroy R. Bartels
Arnold M. Milbright
Assignee (at issue)
International Telephone and Telegraph Corporation

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Quick Facts
Patent No.
US 4,388,983
App. No.
06/342,149
Filed
1982-01-25
Granted
1983-06-21
Kind
A